Influxdb query for todays data

I want to make a table with summed measurements from my influxdb database. For full days its no problem, like yesterday, the day before…, but how do i query a sum of todays measurements ? Not 1d, just from 00:00 to now. now/d does not work, what else can i try ?
I’m using :
SELECT sum(“value”) FROM “GZ-Absolute” WHERE $timeFilter GROUP BY time(1d) fill(null)
with query options :
min interval : no limit
relative time : now/d
time shift : 1d
Hope someone can help me.